What happens when four Portland venues open up their doors to 20 local bands for one night of free music? Apparently it's called a Big Ass Boombox, and it's going down next Friday, January 13. BAB is a loud pop festival featuring a promising lineup of Portland's best up-and-coming pop acts, and you can bet it's going to be a good time—each of the four inner NW venues are a within a single block of each other so you'll be able to pinball between stages to your heart's content. And what's more, the whole thing is under-21 friendly—three of the clubs are all-ages. It's one of those rare festivals that local underage fans thirst for, but unfortunately only get once or twice a year.

You see, Big Ass Boombox is about more than just having a good time. It's about getting people together. Festival heads Eirean Bradley and Arya Imig told the Mercury that their aim is not only exposing the city to some of its unheralded talent, but also "fostering a community of bands who play a like-minded brand of high-energy rock music, who may not necessarily have gotten a chance to have been exposed to each other." Right on, guys. And you know what? The lineup is pretty damned good. The Facebook event page is even promising that you'll find your new favorite band in Portland, and with all the names on board for this one, it's quite possible that you will.

Click the jump for your Big Ass festival lineup:

7-7:30 Profcal
7:45-8:15 Torn ACL's
8:30-9 - The We Shared Milk
9:15-9:45 - Queued Up
10-10:30 - Sons of Huns
10:45-11:15 - Scrimshander
11:30-close - Tiger House

8-8:30- Gamma Knife
8:45-9:15- Charts
9:30-10 - My Autumn's Done Come
10:15-10:45 - Hollywood Tans
11-11:30 - Blue Skies For Black Hearts
11:45-12:15 - Little Volcano
12:30- Pigeons

7-7:30 - Rob Gray
7:45-8:15 - The Morals
8:30-close - Fanno Creek

7-7:30 - Fasters
7:45-8:15 - Awkward Energy
8:30-close - Mo Troper